| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,154 Posts1,056,851 Members48,456 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Dec 2011 Posts: 110 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2011 Posts: 110 | Sandblasting the underside of my cab today. Plan afterward is to use some seam sealer and Por-15 the whole underside. Got to wondering how well the por-15 will stick to the seam sealer. Anyone have experience?
1959 Shortbed stepside 1/2 ton project ![[Linked Image from i236.photobucket.com]](http://i236.photobucket.com/albums/ff117/olddaze/Chevy%20truck%20project/photobucket-4342-1325944221019.jpg) ![[Linked Image from i236.photobucket.com]](http://i236.photobucket.com/albums/ff117/olddaze/Chevy%20truck%20project/20131020_154946.jpg) | | | | | Joined: Dec 2011 Posts: 110 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2011 Posts: 110 | or do ya figure the Por-15 will work better as it's own seam sealer?
1959 Shortbed stepside 1/2 ton project | | | | | Joined: Jun 2011 Posts: 1,901 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 1,901 | If your sandblasting your truck why are you using POR 15?
Por is for covering up rust (encapsulating), epoxy primer is for waterproofing and chip resistance on clean metal with no rust.
Both work on the intended surface (Por needs rust, epoxy needs clean metal)) and neither works on the other...
A self healing "Seam Sealer" is wax based and would go over epoxy not under, Por-15 I'm not sure about.
Give me ambiguity
or give me something else
| | | | | Joined: Jul 2011 Posts: 785 'Bolter | | 'Bolter Joined: Jul 2011 Posts: 785 | I have experienced adhesion issues with POR in that it does not neccessarily play well with other products. I do find it useful for nooks and crannies that are difficult to properly prep (abrade) for typical paint adhesion. Given your cab has been sandblasted, I would be spraying epoxy primer, not POR. Then add your seam sealer within the recoat window, then spray with the top coat of your choice. Done.. | | | | | Joined: Sep 2006 Posts: 2,393 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 2,393 | POR 15 has its own brand of seam sealer to go along with its POR 15 sealer. Their web site has info.
Drew
| | | | | Joined: Dec 2011 Posts: 110 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2011 Posts: 110 | It's sandblasted but not super clean. Wanted to go with the Por-15 for its tough chip resistance and as MPandC said the nooks and crannies. There are also new cab corners, runnings boards, etc. involved and I wanted the blaster to give those parts some 'bite" for the paint.
1959 Shortbed stepside 1/2 ton project | | |
|
|
| |
